Jenn-Air Microwave Error Code F33

F33 means the control board has detected a failure in the meat probe circuit. This covers either the meat probe jack inside the cavity or the meat probe accessory itself. The board monitors resistance values from this circuit, and F33 triggers when those values are missing or out of range.

In most cases, yes. F33 is specific to the meat probe circuit, so standard microwave cooking functions typically remain available. However, you will not be able to use the temperature probe cooking feature until the fault is resolved. If the error appears during normal cooking with no probe connected, clear the code and monitor whether it returns before using the appliance further.

Unplug the probe from the jack and set a multimeter to measure resistance (ohms). Touch the probes to the two electrical contacts on the probe's plug end. At room temperature, a functional meat probe should show a resistance reading consistent with your model's service specifications, commonly in the range of 50,000 to 60,000 ohms. An open circuit reading or a reading near zero indicates a failed probe that needs replacement.

Start by removing the meat probe from the jack and pressing Cancel to clear the code. If F33 returns or the probe cooking feature does not work, test the probe's resistance with a multimeter at room temperature and compare it to the value listed in your service manual. If the probe reads open or significantly out of spec, replace the probe. If the probe tests good, inspect the jack for corrosion or damage and check the wiring harness from the jack to the control board.

If the meat probe is the cause, a replacement Jenn-Air compatible meat probe typically costs $20 to $50 and is a simple plug-in replacement with no tools required. A replacement meat probe jack is a parts cost of roughly $30 to $80, but installation requires disassembling the microwave cavity and is better suited to a technician. If the control board is involved, parts and labor can reach $200 or more, though board replacement for F33 alone is uncommon.